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Diffstat (limited to 'extras/mini-os/h/events.h')
| -rw-r--r-- | extras/mini-os/h/events.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/extras/mini-os/h/events.h b/extras/mini-os/h/events.h new file mode 100644 index 0000000000..5166876b76 --- /dev/null +++ b/extras/mini-os/h/events.h @@ -0,0 +1,53 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge + **************************************************************************** + * + * File: events.h + * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) + * Changes: + * + * Date: Jul 2003 + * + * Environment: Xen Minimal OS + * Description: deal with events + * + **************************************************************************** + * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $ + **************************************************************************** + */ + +#ifndef _EVENTS_H_ +#define _EVENTS_H_ + +/* _EVENT_* are defined in hypervisor-if.h */ +#define EV_BLKDEV _EVENT_BLKDEV +#define EV_TIMER _EVENT_TIMER +#define EV_DIE _EVENT_DIE +#define EV_DEBUG _EVENT_DEBUG +#define EV_NET _EVENT_NET +#define EV_PS2 _EVENT_PS2 + +#define NR_EVS (sizeof(HYPERVISOR_shared_info->events) * 8) + +/* ev handler status */ +#define EVS_INPROGRESS 1 /* Event handler active - do not enter! */ +#define EVS_DISABLED 2 /* Event disabled - do not enter! */ +#define EVS_PENDING 4 /* Event pending - replay on enable */ +#define EVS_REPLAY 8 /* Event has been replayed but not acked yet */ + +/* this represents a event handler. Chaining or sharing is not allowed */ +typedef struct _ev_action_t { + void (*handler)(int, struct pt_regs *); + unsigned int status; /* IRQ status */ + u32 count; +} ev_action_t; + +/* prototypes */ +unsigned int do_event(int ev, struct pt_regs *regs); +unsigned int add_ev_action( int ev, void (*handler)(int, struct pt_regs *) ); +unsigned int enable_ev_action( int ev ); +unsigned int disable_ev_action( int ev ); +void init_events(void); + +#endif /* _EVENTS_H_ */ |